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Preparation device and method for hydrogen arsenide gas standard substances in nitrogen

A technology for gas standard substances and preparation devices, which is applied in measuring devices, instruments, and material analysis through electromagnetic means. It can solve the problems of easy safety and inappropriateness, and achieve good time stability and accuracy.

Pending Publication Date: 2019-06-14
SHANDONG NON METALLIC MATERIAL RES INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Among them, the detection method of arsine is given in GJB533.8, and a series of standard concentrations of arsine gas are needed when making a standard curved ruler, but there is no report on the standard substance of arsine gas at present, and because arsine gas contains Highly toxic, it is prone to safety problems in preparation and storage, and it is not suitable for preparation by conventional methods

Method used

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  • Preparation device and method for hydrogen arsenide gas standard substances in nitrogen

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] A preparation device for arsine gas standard substance in nitrogen, such as figure 1 As shown, the device includes a mixing bottle 1, a transfer bottle 2, a raw material bottle 3, a liquid nitrogen bottle 4, a mechanical rolling mixing mechanism 5, a cooling tank 6, a three-way valve 7, a first mass comparator 11, and a second mass comparator. comparator12.

[0027] The raw material bottle 3 is placed in the cooling tank 6, and the cooling tank 6 is equipped with a cooling liquid 8 to keep the arsine 9 stored in the raw material bottle in a liquid state. valve 7. The liquid nitrogen bottle 4 is placed on the first mass comparator 12, and liquid nitrogen 10 is stored therein. Liquid nitrogen bottle 4 is connected with three-way valve 7.

[0028] The three-way valve 7 is also connected to the transfer bottle 2, the other side of the tr...

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Abstract

The invention belongs to the field of development and preparation of gas standard substances, and particularly relates to a preparation device and method for hydrogen arsenide gas standard substancesin nitrogen. A cooling and liquid nitrogen gasification purging mode is used, so that gaseous hydrogen arsenide with concrete rank poison maintains a liquid state in the transferring process; the accident causing possibility due to leakage of the hydrogen arsenide is avoided; meanwhile, complete no-residue transfer is realized; meanwhile, used purging gas is diluent gas, so that the preparation result cannot be influenced; the total nitrogen gas consumption can be obtained in a mass comparator metering mode; and the precision is ensured. The method has the advantages that the operation is safe, convenient and fast; the precision is high; and in addition, the obtained hydrogen arsenide gas standard substances in nitrogen have high uniformity and stability.

Description

technical field [0001] The invention belongs to the field of research and preparation of gas standard substances, in particular to a device and method for preparing arsine gas standard substances in nitrogen. Background technique [0002] Reference material (RM): It is a substance or material that has been determined to have one or more sufficiently uniform characteristic values, as a "gauge" in the analysis and measurement industry, in calibrating measuring instruments and devices, evaluating Measurement and analysis methods, measurement of substance or material characteristic values, assessment of the operational skill level of analysts, and quality control of products in the production process play an indispensable role. The characteristics and basic requirements of the quality value of standard substances include accuracy, uniformity and stability. Different grades of standard substances have different requirements for their uniformity, stability and uses. Standard subs...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/72G01N27/62G01N33/00
Inventor 荀其宁张文申许峰邓卫华赵晓刚侯倩倩刘霞毛如增任万杰王鹏
Owner SHANDONG NON METALLIC MATERIAL RES INST
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